The year following, that is to say, 1600, Grotius published the Treatise which Aratus, of Sola in Cilicia, composed in Greek on Astronomy, two hundred and some odd years before the birth of Christ.
It is known by the name or the _Phaenomena of Aratus_.

The title fully shews what Grotius gives in this book.

It contains the Phaenomena of Aratus in Greek with Cicero's Latin interpretation, the places where Cicero's Translation is wanting being supplied; a Translation of the same Phaenomena, ascribed to Germanicus; the fragment of Aratus's Prognostics, and the forms of the constellations as found in a Manuscript; with Remarks upon the whole, the Paraphrase of Festus Avienus, and marginal notes.
This work is dedicated to the States of Holland and West Friesland: the author in the dedication promises them others more considerable.

The book is a prodigy of science and erudition: it discovers a great knowledge of Physics, and especially of Astronomy.

The Latin verses made by Grotius to supply those of Cicero that were lost, are not inferior to the lines of that great man, in the opinion of the Abbe d'Olivet, an excellent judge, who likewise thinks the supplement a very good commentary on Aratus's work.